Qualification > Math
IGCSE MATHS Doubts
NidZ- Hero:
--- Quote from: ~VIN1094~ on May 18, 2010, 05:42:08 pm ---
--- End quote ---
thanz a Lot a big confusion :D
Ghost Of Highbury:
--- Quote from: saleemsamer on May 18, 2010, 05:05:46 pm ---can some1 plz explain jun 2007 p4 q 2f and 4 c-e :)
--- End quote ---
take 2 sets of c-ordinates (2,1) (3,3)
(1 0) * (2 3) = (2 3)
(-1 1) (1 3) (-1 0)
do the same with the other co-ordinate
(2,1) --> (2,-1)
(3,3) --> (3,0)
(5,1) --> (5,-4)
ii) https://studentforums.biz/index.php/topic,5575.msg167872.html#msg167872
check that..
if u see carefully, its the matrix which represents..shear of shear factor = -1 and y invariant.
iii) inverse of the transformation matrix which mapped ABC to A3B3C3
that is inverse of (1 0) = (1 0)
(-1 1) (1 1)
4c) this means that find two values for 'y' for which there are 2 values of x for each of them
for this u have to use the graph, check the diagram..
put straight lines where u think the line will intersect the graph twice..
(red lines)
ull notice, that wen y = 3...x has 2 values..
also, wen y = -9, x has two values
4e) f(x) + x -1 =0
as f(x)=y
y+x-1 = 0
y = 1-x
draw the line y = 1-x in the graph
eii) it cuts the graph at 3 points...meaning it has 3 solutions
saleemsamer:
--- Quote from: A@di on May 18, 2010, 05:58:42 pm ---take 2 sets of c-ordinates (2,1) (3,3)
(1 0) * (2 3) = (2 3)
(-1 1) (1 3) (-1 0)
do the same with the other co-ordinate
(2,1) --> (2,-1)
(3,3) --> (3,0)
(5,1) --> (5,-4)
ii) https://studentforums.biz/index.php/topic,5575.msg167872.html#msg167872
check that..
if u see carefully, its the matrix which represents..shear of shear factor = -1 and y invariant.
iii) inverse of the transformation matrix which mapped ABC to A3B3C3
that is inverse of (1 0) = (1 0)
(-1 1) (1 1)
--- End quote ---
Thank You but wat abt 4
Vin:
--- Quote from: ksitna on May 18, 2010, 05:41:57 pm ---
oh sorry
its minus
--- End quote ---
wats the answer ?? did u type the correct ques =P .. i think i got it ..
Vin:
--- Quote from: Nidzzz on May 18, 2010, 05:57:41 pm --- thanz a Lot a big confusion :D
--- End quote ---
which one u talkin abt ?? u didnt get it ??
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